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TRUSTED BY MALVERNE, NY HOMEOWNERS

  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon15
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Malverne, NY

*The Angi rating for Generator Install companies in Malverne, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Malverne, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on May 29, 2026

Find Generator install pros in Malverne

Avatar for No Shorts Electric, Inc.
No Shorts Electric, Inc.
5.0(
99
)
Portable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Great people did a great job installing a transfer switch, fast and easy. Will hire again."
old electrical meter and meter pan
Service Upgrade
Service Upgrade
old electrical meter and meter pan
old 100 amp fused electrical panel

+3

Response time2 hrs
Response rate96%
Recommended by97%of homeowners
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Avatar for GenShield LLC
GenShield LLC
5.0(
7
)
Fixed Generator - Repair

Serving Malverne, NY and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in generator service and repair and provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

10 neighbors recently requested a quote
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Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving Malverne, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Jim, the Owner provided timely, Expert generator repair, to get a 15 year old 30KW generator that hadnâ  t run in years operational in 30 minutes. We were fortunate to find him, and appreciate his skill, integrity...truly a consummate Professional ! 5+ Star recommendation"
Generator repair
Generator repair
Generator repair
Generator repair
Generator repair

+27

Response time9 hrs
Recommended by100%of homeowners
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Avatar for Real Power Electrical Contractors
Real Power Electrical Contractors
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

"They worked as a subcontractor for a commercial project I had with a county water station. Marty is very knowledgeable, on time, cooperative with other trades, neat. His crew is also the same. Great guy, I would hire him again."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Mr. Wonderful's Electric, Inc.
Mr. Wonderful's Electric, Inc.
4.7(
14
)
Portable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Quick response; courteous and professional. Would definitely recommend this company for any electrical. I would definitely call Mr. wonderful Electrical for future electrical needs."
200 amp 2 meter service
200 amp PVC service
Chandelier
LED hi hats
200 amp panel

+5

Response time4 hrs
Response rate94%
Recommended by92%of homeowners
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Avatar for Star Electric
Star Electric
4.2(
122
)
Fixed Generator - InstallFixed Generator - Repair

Serving Malverne, NY and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Fast and super helpful. Gave me a proposal right away. Started work same week. If deviations were needed, was specific on what and why. Reasonable and fair pricing, and honest about their capabilities and areas of expertise. Professional team and went out the way to provide additional references for other concerns. I also appreciated the video Fabio took to show me the before and after, especially in areas I was unable to see."
46 neighbors recently requested a quote
Recommended by83%of homeowners
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Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

The Malverne, NY homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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